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The GCF of 49 and 55 is 1.

The prime factorization of 49 is 7*7.
The prime factorization of 55 is 5*11
They have no common factors other than 1, so they are coprime and their GCF is 1.

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8y ago
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13y ago

There is no answer to the question.

For, if X was the greatest common multiple, then 2X would also be a common multiple and would clearly be greater. And then, if 2X were the greatest common multiple, 4X would be a common multiple and greater still. And so on ...

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15y ago

42 = 2 x 3 x 7; 55 = 5 x 11; Greatest common factor is 1

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8y ago

The greatest common multiple of any set of integers is infinite.

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9y ago

The GCF is 11.

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7y ago

The GCF is 1.

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10y ago

The GCF of 55 and 77 is 11.

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14y ago

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15y ago

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Q: What is the greatest common multiple of 42 and 55?
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